diff --git a/ApplicationLibCode/UserInterface/RiuComparisonViewMover.cpp b/ApplicationLibCode/UserInterface/RiuComparisonViewMover.cpp
index ea0419ff9a..dd0d385e9a 100644
--- a/ApplicationLibCode/UserInterface/RiuComparisonViewMover.cpp
+++ b/ApplicationLibCode/UserInterface/RiuComparisonViewMover.cpp
@@ -61,7 +61,7 @@ bool RiuComparisonViewMover::eventFilter( QObject* watched, QEvent* event )
 
                 if ( m_dragState == LEFT_EDGE )
                 {
-                    QPointF    mousePos          = mEv->windowPos();
+                    QPointF    mousePos          = mEv->localPos();
                     QPointF    normMousePos      = { mousePos.x() / m_viewer->width(), mousePos.y() / m_viewer->height() };
                     cvf::Rectf orgCompViewWindow = m_viewer->comparisonViewVisibleNormalizedRect();